Chʻung-ming, an island astride the mouth of the Yangtze, had been captured against quite stiff opposition from the Chinese River Defense Force and was being developed into an advance naval and air base.
Cheng's presence along the southeast coastline made the Manchus nervous about the security of Ch'ung-ming island off the Kiangsu coast, which they promptly reinforced.
2016, Daniel Bacon, chapter 15, in Frisco[3] (Fiction), Quicksilver Press, →ISBN, →OCLC, page 108:
The ship steamed past Ch'ung-ming Island and veered south into the Whangpu River, a quarter-mile wide tributary flanked on both sides by dirt levees.
